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<font size="4">JConstructorDeclaration.java</font>
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<FONT ID="LN">1   </FONT><A NAME="1"></A><FONT ID="SingleLineComment">// Copyright 2013 Bill Campbell, Swami Iyer and Bahar Akbal-Delibas
<FONT ID="LN">2   </FONT><A NAME="2"></A></FONT>
<FONT ID="LN">3   </FONT><A NAME="3"></A><FONT ID="Package">package</FONT> jminusminus;
<FONT ID="LN">4   </FONT><A NAME="4"></A>
<FONT ID="LN">5   </FONT><A NAME="5"></A><FONT ID="Import">import</FONT> java.util.ArrayList;
<FONT ID="LN">6   </FONT><A NAME="6"></A><FONT ID="Import">import</FONT> <FONT ID="Static">static</FONT> <A HREF="../jminusminus/CLConstants.java.html">jminusminus.CLConstants</A>.*;
<FONT ID="LN">7   </FONT><A NAME="7"></A>
<FONT ID="LN">8   </FONT><A NAME="8"></A><FONT ID="FormalComment">/**
<FONT ID="LN">9   </FONT><A NAME="9"></A> * The AST node for a constructor declaration. A constructor looks very much
<FONT ID="LN">10  </FONT><A NAME="10"></A> * like a method.
<FONT ID="LN">11  </FONT><A NAME="11"></A> */</FONT>
<FONT ID="LN">12  </FONT><A NAME="12"></A>
<FONT ID="LN">13  </FONT><A NAME="13"></A><FONT ID="Class">class</FONT> JConstructorDeclaration <FONT ID="Extends">extends</FONT> <A HREF="../jminusminus/JMethodDeclaration.java.html">JMethodDeclaration</A> <FONT ID="Implements">implements</FONT> <A HREF="../jminusminus/JMember.java.html">JMember</A> {
<FONT ID="LN">14  </FONT><A NAME="14"></A>
<FONT ID="LN">15  </FONT><A NAME="15"></A>    <FONT ID="FormalComment">/** Does this constructor invoke this(...) or super(...)? */</FONT>
<FONT ID="LN">16  </FONT><A NAME="16"></A>    <FONT ID="Private">private</FONT> <FONT ID="Boolean">boolean</FONT> invokesConstructor;
<FONT ID="LN">17  </FONT><A NAME="17"></A>
<FONT ID="LN">18  </FONT><A NAME="18"></A>    <FONT ID="FormalComment">/** Defining class */</FONT>
<FONT ID="LN">19  </FONT><A NAME="19"></A>    <A HREF="../jminusminus/JClassDeclaration.java.html">JClassDeclaration</A> definingClass;
<FONT ID="LN">20  </FONT><A NAME="20"></A>
<FONT ID="LN">21  </FONT><A NAME="21"></A>    <FONT ID="FormalComment">/**
<FONT ID="LN">22  </FONT><A NAME="22"></A>     * Construct an AST node for a constructor declaration given the line
<FONT ID="LN">23  </FONT><A NAME="23"></A>     * number, modifiers, constructor name, formal parameters, and the
<FONT ID="LN">24  </FONT><A NAME="24"></A>     * constructor body.
<FONT ID="LN">25  </FONT><A NAME="25"></A>     * 
<FONT ID="LN">26  </FONT><A NAME="26"></A>     * @param line
<FONT ID="LN">27  </FONT><A NAME="27"></A>     *            line in which the constructor declaration occurs in the source
<FONT ID="LN">28  </FONT><A NAME="28"></A>     *            file.
<FONT ID="LN">29  </FONT><A NAME="29"></A>     * @param mods
<FONT ID="LN">30  </FONT><A NAME="30"></A>     *            modifiers.
<FONT ID="LN">31  </FONT><A NAME="31"></A>     * @param name
<FONT ID="LN">32  </FONT><A NAME="32"></A>     *            constructor name.
<FONT ID="LN">33  </FONT><A NAME="33"></A>     * @param params
<FONT ID="LN">34  </FONT><A NAME="34"></A>     *            the formal parameters.
<FONT ID="LN">35  </FONT><A NAME="35"></A>     * @param body
<FONT ID="LN">36  </FONT><A NAME="36"></A>     *            constructor body.
<FONT ID="LN">37  </FONT><A NAME="37"></A>     */</FONT>
<FONT ID="LN">38  </FONT><A NAME="38"></A>
<FONT ID="LN">39  </FONT><A NAME="39"></A>    <FONT ID="Public">public</FONT> JConstructorDeclaration(<FONT ID="Int">int</FONT> line, ArrayList&lt;String&gt; mods,
<FONT ID="LN">40  </FONT><A NAME="40"></A>            String name, ArrayList&lt;<A HREF="../jminusminus/JFormalParameter.java.html">JFormalParameter</A>&gt; params, <A HREF="../jminusminus/JBlock.java.html">JBlock</A> body)
<FONT ID="LN">41  </FONT><A NAME="41"></A>
<FONT ID="LN">42  </FONT><A NAME="42"></A>    {
<FONT ID="LN">43  </FONT><A NAME="43"></A>        <FONT ID="Super">super</FONT>(line, mods, name, Type.CONSTRUCTOR, params, body);
<FONT ID="LN">44  </FONT><A NAME="44"></A>    }
<FONT ID="LN">45  </FONT><A NAME="45"></A>
<FONT ID="LN">46  </FONT><A NAME="46"></A>    <FONT ID="FormalComment">/**
<FONT ID="LN">47  </FONT><A NAME="47"></A>     * Declare this constructor in the parent (class) context.
<FONT ID="LN">48  </FONT><A NAME="48"></A>     * 
<FONT ID="LN">49  </FONT><A NAME="49"></A>     * @param context
<FONT ID="LN">50  </FONT><A NAME="50"></A>     *            the parent (class) context.
<FONT ID="LN">51  </FONT><A NAME="51"></A>     * @param partial
<FONT ID="LN">52  </FONT><A NAME="52"></A>     *            the code emitter (basically an abstraction for producing the
<FONT ID="LN">53  </FONT><A NAME="53"></A>     *            partial class).
<FONT ID="LN">54  </FONT><A NAME="54"></A>     */</FONT>
<FONT ID="LN">55  </FONT><A NAME="55"></A>
<FONT ID="LN">56  </FONT><A NAME="56"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> preAnalyze(<A HREF="../jminusminus/Context.java.html">Context</A> context, <A HREF="../jminusminus/CLEmitter.java.html">CLEmitter</A> partial) {
<FONT ID="LN">57  </FONT><A NAME="57"></A>        <FONT ID="Super">super</FONT>.preAnalyze(context, partial);
<FONT ID="LN">58  </FONT><A NAME="58"></A>        <FONT ID="If">if</FONT> (isStatic) {
<FONT ID="LN">59  </FONT><A NAME="59"></A>            JAST.compilationUnit.reportSemanticError(line(),
<FONT ID="LN">60  </FONT><A NAME="60"></A>                    <FONT ID="StringLiteral">"Constructor cannot be declared static"</FONT>);
<FONT ID="LN">61  </FONT><A NAME="61"></A>        } <FONT ID="Else">else</FONT> <FONT ID="If">if</FONT> (isAbstract) {
<FONT ID="LN">62  </FONT><A NAME="62"></A>            JAST.compilationUnit.reportSemanticError(line(),
<FONT ID="LN">63  </FONT><A NAME="63"></A>                    <FONT ID="StringLiteral">"Constructor cannot be declared abstract"</FONT>);
<FONT ID="LN">64  </FONT><A NAME="64"></A>        }
<FONT ID="LN">65  </FONT><A NAME="65"></A>        <FONT ID="If">if</FONT> (body.statements().size() &gt; <FONT ID="IntegerLiteral">0</FONT>
<FONT ID="LN">66  </FONT><A NAME="66"></A>                &amp;&amp; body.statements().get(<FONT ID="IntegerLiteral">0</FONT>) <FONT ID="InstanceOf">instanceof</FONT> <A HREF="../jminusminus/JStatementExpression.java.html">JStatementExpression</A>) {
<FONT ID="LN">67  </FONT><A NAME="67"></A>            <A HREF="../jminusminus/JStatementExpression.java.html">JStatementExpression</A> first = (<A HREF="../jminusminus/JStatementExpression.java.html">JStatementExpression</A>) body
<FONT ID="LN">68  </FONT><A NAME="68"></A>                    .statements().get(<FONT ID="IntegerLiteral">0</FONT>);
<FONT ID="LN">69  </FONT><A NAME="69"></A>            <FONT ID="If">if</FONT> (first.expr <FONT ID="InstanceOf">instanceof</FONT> <A HREF="../jminusminus/JSuperConstruction.java.html">JSuperConstruction</A>) {
<FONT ID="LN">70  </FONT><A NAME="70"></A>                ((<A HREF="../jminusminus/JSuperConstruction.java.html">JSuperConstruction</A>) first.expr).markProperUseOfConstructor();
<FONT ID="LN">71  </FONT><A NAME="71"></A>                invokesConstructor = <FONT ID="True">true</FONT>;
<FONT ID="LN">72  </FONT><A NAME="72"></A>            } <FONT ID="Else">else</FONT> <FONT ID="If">if</FONT> (first.expr <FONT ID="InstanceOf">instanceof</FONT> <A HREF="../jminusminus/JThisConstruction.java.html">JThisConstruction</A>) {
<FONT ID="LN">73  </FONT><A NAME="73"></A>                ((<A HREF="../jminusminus/JThisConstruction.java.html">JThisConstruction</A>) first.expr).markProperUseOfConstructor();
<FONT ID="LN">74  </FONT><A NAME="74"></A>                invokesConstructor = <FONT ID="True">true</FONT>;
<FONT ID="LN">75  </FONT><A NAME="75"></A>            }
<FONT ID="LN">76  </FONT><A NAME="76"></A>        }
<FONT ID="LN">77  </FONT><A NAME="77"></A>    }
<FONT ID="LN">78  </FONT><A NAME="78"></A>
<FONT ID="LN">79  </FONT><A NAME="79"></A>    <FONT ID="FormalComment">/**
<FONT ID="LN">80  </FONT><A NAME="80"></A>     * Analysis for a constructor declaration is very much like that for a
<FONT ID="LN">81  </FONT><A NAME="81"></A>     * method declaration.
<FONT ID="LN">82  </FONT><A NAME="82"></A>     * 
<FONT ID="LN">83  </FONT><A NAME="83"></A>     * @param context
<FONT ID="LN">84  </FONT><A NAME="84"></A>     *            context in which names are resolved.
<FONT ID="LN">85  </FONT><A NAME="85"></A>     * @return the analyzed (and possibly rewritten) AST subtree.
<FONT ID="LN">86  </FONT><A NAME="86"></A>     */</FONT>
<FONT ID="LN">87  </FONT><A NAME="87"></A>
<FONT ID="LN">88  </FONT><A NAME="88"></A>    <FONT ID="Public">public</FONT> <A HREF="../jminusminus/JAST.java.html">JAST</A> analyze(<A HREF="../jminusminus/Context.java.html">Context</A> context) {
<FONT ID="LN">89  </FONT><A NAME="89"></A>        <FONT ID="SingleLineComment">// Record the defining class declaration.
<FONT ID="LN">90  </FONT><A NAME="90"></A></FONT>        definingClass = (<A HREF="../jminusminus/JClassDeclaration.java.html">JClassDeclaration</A>) context.classContext().definition();
<FONT ID="LN">91  </FONT><A NAME="91"></A>        <FONT ID="Return">return</FONT> <FONT ID="Super">super</FONT>.analyze(context);
<FONT ID="LN">92  </FONT><A NAME="92"></A>    }
<FONT ID="LN">93  </FONT><A NAME="93"></A>
<FONT ID="LN">94  </FONT><A NAME="94"></A>    <FONT ID="FormalComment">/**
<FONT ID="LN">95  </FONT><A NAME="95"></A>     * Add this constructor declaration to the partial class.
<FONT ID="LN">96  </FONT><A NAME="96"></A>     * 
<FONT ID="LN">97  </FONT><A NAME="97"></A>     * @param context
<FONT ID="LN">98  </FONT><A NAME="98"></A>     *            the parent (class) context.
<FONT ID="LN">99  </FONT><A NAME="99"></A>     * @param partial
<FONT ID="LN">100 </FONT><A NAME="100"></A>     *            the code emitter (basically an abstraction for producing the
<FONT ID="LN">101 </FONT><A NAME="101"></A>     *            partial class).
<FONT ID="LN">102 </FONT><A NAME="102"></A>     */</FONT>
<FONT ID="LN">103 </FONT><A NAME="103"></A>
<FONT ID="LN">104 </FONT><A NAME="104"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> partialCodegen(<A HREF="../jminusminus/Context.java.html">Context</A> context, <A HREF="../jminusminus/CLEmitter.java.html">CLEmitter</A> partial) {
<FONT ID="LN">105 </FONT><A NAME="105"></A>        partial.addMethod(mods, <FONT ID="StringLiteral">"&lt;init&gt;"</FONT>, descriptor, <FONT ID="Null">null</FONT>, <FONT ID="False">false</FONT>);
<FONT ID="LN">106 </FONT><A NAME="106"></A>        <FONT ID="If">if</FONT> (!invokesConstructor) {
<FONT ID="LN">107 </FONT><A NAME="107"></A>            partial.addNoArgInstruction(ALOAD_0);
<FONT ID="LN">108 </FONT><A NAME="108"></A>            partial.addMemberAccessInstruction(INVOKESPECIAL,
<FONT ID="LN">109 </FONT><A NAME="109"></A>                    ((<A HREF="../jminusminus/JTypeDecl.java.html">JTypeDecl</A>) context.classContext().definition())
<FONT ID="LN">110 </FONT><A NAME="110"></A>                            .superType().jvmName(), <FONT ID="StringLiteral">"&lt;init&gt;"</FONT>, <FONT ID="StringLiteral">"()V"</FONT>);
<FONT ID="LN">111 </FONT><A NAME="111"></A>        }
<FONT ID="LN">112 </FONT><A NAME="112"></A>        partial.addNoArgInstruction(RETURN);
<FONT ID="LN">113 </FONT><A NAME="113"></A>    }
<FONT ID="LN">114 </FONT><A NAME="114"></A>
<FONT ID="LN">115 </FONT><A NAME="115"></A>    <FONT ID="FormalComment">/**
<FONT ID="LN">116 </FONT><A NAME="116"></A>     * Generate code for the constructor declaration.
<FONT ID="LN">117 </FONT><A NAME="117"></A>     * 
<FONT ID="LN">118 </FONT><A NAME="118"></A>     * @param output
<FONT ID="LN">119 </FONT><A NAME="119"></A>     *            the code emitter (basically an abstraction for producing the
<FONT ID="LN">120 </FONT><A NAME="120"></A>     *            .class file).
<FONT ID="LN">121 </FONT><A NAME="121"></A>     */</FONT>
<FONT ID="LN">122 </FONT><A NAME="122"></A>
<FONT ID="LN">123 </FONT><A NAME="123"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> codegen(<A HREF="../jminusminus/CLEmitter.java.html">CLEmitter</A> output) {
<FONT ID="LN">124 </FONT><A NAME="124"></A>        output.addMethod(mods, <FONT ID="StringLiteral">"&lt;init&gt;"</FONT>, descriptor, <FONT ID="Null">null</FONT>, <FONT ID="False">false</FONT>);
<FONT ID="LN">125 </FONT><A NAME="125"></A>        <FONT ID="If">if</FONT> (!invokesConstructor) {
<FONT ID="LN">126 </FONT><A NAME="126"></A>            output.addNoArgInstruction(ALOAD_0);
<FONT ID="LN">127 </FONT><A NAME="127"></A>            output.addMemberAccessInstruction(INVOKESPECIAL,
<FONT ID="LN">128 </FONT><A NAME="128"></A>                    ((<A HREF="../jminusminus/JTypeDecl.java.html">JTypeDecl</A>) context.classContext().definition())
<FONT ID="LN">129 </FONT><A NAME="129"></A>                            .superType().jvmName(), <FONT ID="StringLiteral">"&lt;init&gt;"</FONT>, <FONT ID="StringLiteral">"()V"</FONT>);
<FONT ID="LN">130 </FONT><A NAME="130"></A>        }
<FONT ID="LN">131 </FONT><A NAME="131"></A>        <FONT ID="SingleLineComment">// Field initializations
<FONT ID="LN">132 </FONT><A NAME="132"></A></FONT>        <FONT ID="For">for</FONT> (<A HREF="../jminusminus/JFieldDeclaration.java.html">JFieldDeclaration</A> field : definingClass
<FONT ID="LN">133 </FONT><A NAME="133"></A>                .instanceFieldInitializations()) {
<FONT ID="LN">134 </FONT><A NAME="134"></A>            field.codegenInitializations(output);
<FONT ID="LN">135 </FONT><A NAME="135"></A>        }
<FONT ID="LN">136 </FONT><A NAME="136"></A>        <FONT ID="SingleLineComment">// And then the body
<FONT ID="LN">137 </FONT><A NAME="137"></A></FONT>        body.codegen(output);
<FONT ID="LN">138 </FONT><A NAME="138"></A>        output.addNoArgInstruction(RETURN);
<FONT ID="LN">139 </FONT><A NAME="139"></A>    }
<FONT ID="LN">140 </FONT><A NAME="140"></A>
<FONT ID="LN">141 </FONT><A NAME="141"></A>    <FONT ID="FormalComment">/**
<FONT ID="LN">142 </FONT><A NAME="142"></A>     * @inheritDoc
<FONT ID="LN">143 </FONT><A NAME="143"></A>     */</FONT>
<FONT ID="LN">144 </FONT><A NAME="144"></A>
<FONT ID="LN">145 </FONT><A NAME="145"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> writeToStdOut(PrettyPrinter p) {
<FONT ID="LN">146 </FONT><A NAME="146"></A>        p.printf(<FONT ID="StringLiteral">"&lt;JConstructorDeclaration line=\"%d\" "</FONT> + <FONT ID="StringLiteral">"name=\"%s\"&gt;\n"</FONT>,
<FONT ID="LN">147 </FONT><A NAME="147"></A>                line(), name);
<FONT ID="LN">148 </FONT><A NAME="148"></A>        p.indentRight();
<FONT ID="LN">149 </FONT><A NAME="149"></A>        <FONT ID="If">if</FONT> (context != <FONT ID="Null">null</FONT>) {
<FONT ID="LN">150 </FONT><A NAME="150"></A>            context.writeToStdOut(p);
<FONT ID="LN">151 </FONT><A NAME="151"></A>        }
<FONT ID="LN">152 </FONT><A NAME="152"></A>        <FONT ID="If">if</FONT> (mods != <FONT ID="Null">null</FONT>) {
<FONT ID="LN">153 </FONT><A NAME="153"></A>            p.println(<FONT ID="StringLiteral">"&lt;Modifiers&gt;"</FONT>);
<FONT ID="LN">154 </FONT><A NAME="154"></A>            p.indentRight();
<FONT ID="LN">155 </FONT><A NAME="155"></A>            <FONT ID="For">for</FONT> (String mod : mods) {
<FONT ID="LN">156 </FONT><A NAME="156"></A>                p.printf(<FONT ID="StringLiteral">"&lt;Modifier name=\"%s\"/&gt;\n"</FONT>, mod);
<FONT ID="LN">157 </FONT><A NAME="157"></A>            }
<FONT ID="LN">158 </FONT><A NAME="158"></A>            p.indentLeft();
<FONT ID="LN">159 </FONT><A NAME="159"></A>            p.println(<FONT ID="StringLiteral">"&lt;/Modifiers&gt;"</FONT>);
<FONT ID="LN">160 </FONT><A NAME="160"></A>        }
<FONT ID="LN">161 </FONT><A NAME="161"></A>        <FONT ID="If">if</FONT> (params != <FONT ID="Null">null</FONT>) {
<FONT ID="LN">162 </FONT><A NAME="162"></A>            p.println(<FONT ID="StringLiteral">"&lt;FormalParameters&gt;"</FONT>);
<FONT ID="LN">163 </FONT><A NAME="163"></A>            <FONT ID="For">for</FONT> (<A HREF="../jminusminus/JFormalParameter.java.html">JFormalParameter</A> param : params) {
<FONT ID="LN">164 </FONT><A NAME="164"></A>                p.indentRight();
<FONT ID="LN">165 </FONT><A NAME="165"></A>                param.writeToStdOut(p);
<FONT ID="LN">166 </FONT><A NAME="166"></A>                p.indentLeft();
<FONT ID="LN">167 </FONT><A NAME="167"></A>            }
<FONT ID="LN">168 </FONT><A NAME="168"></A>            p.println(<FONT ID="StringLiteral">"&lt;/FormalParameters&gt;"</FONT>);
<FONT ID="LN">169 </FONT><A NAME="169"></A>        }
<FONT ID="LN">170 </FONT><A NAME="170"></A>        <FONT ID="If">if</FONT> (body != <FONT ID="Null">null</FONT>) {
<FONT ID="LN">171 </FONT><A NAME="171"></A>            p.println(<FONT ID="StringLiteral">"&lt;Body&gt;"</FONT>);
<FONT ID="LN">172 </FONT><A NAME="172"></A>            p.indentRight();
<FONT ID="LN">173 </FONT><A NAME="173"></A>            body.writeToStdOut(p);
<FONT ID="LN">174 </FONT><A NAME="174"></A>            p.indentLeft();
<FONT ID="LN">175 </FONT><A NAME="175"></A>            p.println(<FONT ID="StringLiteral">"&lt;/Body&gt;"</FONT>);
<FONT ID="LN">176 </FONT><A NAME="176"></A>        }
<FONT ID="LN">177 </FONT><A NAME="177"></A>        p.indentLeft();
<FONT ID="LN">178 </FONT><A NAME="178"></A>        p.println(<FONT ID="StringLiteral">"&lt;/JConstructorDeclaration&gt;"</FONT>);
<FONT ID="LN">179 </FONT><A NAME="179"></A>    }
<FONT ID="LN">180 </FONT><A NAME="180"></A>
<FONT ID="LN">181 </FONT><A NAME="181"></A>}
<FONT ID="LN">182 </FONT><A NAME="182"></A></pre>
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